Excavator or dredger.



R. GLOGNER. EXGAVATOR 0R DRDGEB..

APPLICATION FILED HAY 7. 1909.

llll l l l l l ll lll ||||||il r R. GLGNER. EXCAVATOR 0R DPJDGERAAPPLICATION FILED MAY 7. 190s.

932,857. Patented Aug. 31, 1909.

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EXCAVATOR 0R DREDGER,

APPLICATION FILED MAY '7. 1908. v l 932,857'- Patented Aug. 31,1909.

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of at?K av @MU/n MQW? R. GLOGNER. BXGAVATOR'OR DREDGBRA APPLIGATIONYILED MAY 7. 1908. 932,857, APatented Aug. 31, 1909.

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Vs peciication of Letters Patient.

Patented Allg; 31,4 v11909- application med may?, 1911s. ,serial No.431,513.

To all lwhom t may concern:

Be it known that I, RoBEnrGLoGNER, engineer, residing at Charlottenburg,in the Province of Brandenburg, Germany, have invented certain new andvuseful Improvements in or Relating to Excavators or Dredgers; and 'I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art ltowhich it appertains to make and use the same.

This invention relates to an excavating device or dry dredger whichdiffers from the-well known apparatus used for the same purpose in thatthe excavating tool is not utilized at the same time for transporting,that is to say, conveying the said earth from the point of excavation tothe transport carriage, but by a separate continuously Working transportor conveyer apparatus being provided for the purpose, so that, since theexcavating tool is working also in a continu-v ous manner, theexcavation and the conveying of the excavated material take place 11n acontinuous manner.

Another novel feature consists in the special shape given to theexcavating tool which makes it possible to excavate a thick :layer atthe outset, this leading not only to an extremely increased output, butalso to a reduction of labor.

A constructiona-l form of the apparatus is shown in the drawing inFigure 1 in front elevation, i-n Fig. 2 1n plan and Fig.'3 in sideelevation. Fig. 4' finally shows diagrammatica ly a second constructionof the excavator i side elevation. y 0n a truck y2 traveling on rails l,are arranged a-t right anglesto ,thev direction of the rails '1, rails-3 on which moves a second truck 4. On| the said truck is mounted 'abracket or standard 5 carrying a driving spindle 46 about which swings'as a double jibf-rame 7, the branches o which -carry at their ends 8,8, 'by means ofbeanings, a spindle or pin 49 on which is mounted apol-yvonal whee 10. To each Iface of the said w ee'l is secured adredger bucket 1'1, so Atha-t the polygonal body 10 forms, with thebuckets 11 a bucket wheel which, as will fbe seen from Fig. 1,constitutes t-'he excavatin tool. Thev said ibucket wheel is driven 1nthe direction ofthe arrow I by means of -two chain ivot a.

wheels 12 mounte on. the pin 9, the-diagranunatica'lly indicated' chains13, and the chain wheels lLt-mounti ed on the spindle 6. On the platformof the truck 4 is mounted the driving motor l5 as well as the necessarygear or transmission apparatus and a winch 16. On the platform of thetruck 4 is finally mounted a jib 17 supported by ties 18 and carrying atthe end a chain roller 19. Over the said roller travels from the winchdrum 16 a chain 32 which, by means of a shackle 20, engages with the endof the jib-frame 7, so that the end of the ji-b .and with it the bucketwheel 10 11, can be raised and lowered again in the direction of thearrow Il by means of the winch, the said wheel describing then a circleabout the spindle 6 as the center.

The bucket wheel is capable of detaching earth from the ground but notof carrying it away or conveying it linto the trucks intendedv {ortransport. To that end, there is rotatably mounted o n the spindle 6 asaxis, a second frame consistinglof longitudinal 'beams 21 carrying `attheir ends bearings 22 n adjustable linslot's, for a rol-ler 23. On thespindle 6 is secured a roller 24 of the same s1ze. Over these two.rollers or drums pass a number of endless cables 25. Moreover, over therollers also passes a wide endless transport band 26 which is supportedby the cables 25 at points not supported by the rollers. This transportband is, thereforedriven by the spindle 6 at the same time as the=bucket wheel. kBy moving the bearings 22 by means of the screw spindle27, the lsaid transport band can be stretched to the desired extent. Onthe transport band 26 are arranged transversely 'a number of vledges 28which form' drivers. The frames 7 and 21 are rigidly connected togetherby mea-nsof an ad]u stable rod 29, the result of which lis that duringthe movement, that is :to say, raising and lowering of the frame '7 andof the bucket wheel 10 and vl1, the lframe 21 and the tra/nsport 'band26 are simultaneously moved. l

1n' working, the earth excavated by-the -Vbuckets 11 isv projected inthe manner shown in Fig. 1 on to -the transport band 26 and carried bythe same or, if it is greatly inclined in the bottom position, by thedrivers y28, and transported to the top, that is tosay tdthe-spindle 6.After passing beyond the highest position, the earth detached isdischarged into a chute 30 and thence 1nto lthe truck 31 arranged belowthe same. The ex- (not shown in cavator can work either in such mannerthat after each up and down movement of the bucket wheel, the truck 2 ismoved a certain extent, say to half the width pf the bucket, so that auniform thickness of layer can' be detached from the ground throughoutthe ywhole length of the track, or in such manner that after having donea short piece, that is to say, only a few widths of bucket in the mannerdescribed, the truck 4 is moved nearer to the ground to be excavated,

to the extent'that the bucket can operate at once, that is to say, tothe thickness 'of cut.

By the combination of both methods of working, it is possiblel toproduce, in plan, lines of cut at an angle to the track 1 and ifnecessary, to produce recesses in the wall of earth.

The excavator shown in Fig. 4 consists also of a truck 2 with rails 3 onvwhich are mounted a second truck 4 with a standard or bracket 5,driving spindle 6, jib 17 and chute 30. In the same way, there is a jib21 which carries the transport. band 26 with its rollers 23 24. Unlikein the first construction shown in Figs. 1-3 where they are parallel tothe direction of Working, the rails 1 on which the dredger is travelingare however at a right angle to 'the saine.l

About the spindle 22 of the roller 23 is mounted a spade-like diggingtool conslsting of a cutting edge 33 and a slide surface 34 with lateralcheeks 35, by means' of this spade is mounted on the spindle 22. Thewhole transport device, together with the spade is supported by the jib17 and can be raised and lowered by means ofthe winch the drawing). Inthis case, it is possible to turn the spade to a certain extent4relatively to the jib, which movement is limited' by the sto s 36 37.

The working wit the spade or digging tool can be carried out in twoways, either 'the whole machine can4 be moved at the lowest position ofthe spades as shown by `full lines, in which case a layer is cut oif inhorizontal direction which, in accordance with arrows IV, slides alongthe `slide sur* face 34 and arrives at the transport band whichtransfersv it to the chute 30 or to the truck not shown in the drawing.The work can, however, be also carried out in such manner that the Wholeexcavator is moved in the direction of the arrow only to a short extent,that is to say, to the thickness of cut, so that the edge of the spadepenetrates a little into the ground, w ereupon the jib, and with it thespade are raised or moved in the direction of the arrow V. .In this'case, it is preferable to arrange the spade at a reater angle to thejib, as shown by dotte lines. -In thatcase, at each up and downmovement, thel layer or shaving correspondingto the width of the spade,is detached from the ground and carried away.

which i cease? After each such movement, the upper truck 4 is movedrelatively to the bottom truck to the extent of about the width of thespade. With the latter tool it is possible to make narrow recesses orcuttings, while the excavator shown in Figs. 1`3 is more suitable forwidening cuttings already made.

It will be clear that bythe use of a bucket wheel, that is `to say, of atool of similar formation to a milling-cutter for se arating ordetaching the earth, a considera ly thicker layer can be detached-thanwith the so-called bucket ladder dredgers in which the buckets are notpositively guided and are not forced into the earth under strongpressure, but penetrate into the ground with their edges merely underthe iniiuence of their own weight and after having been partly filled,are dragged withoutv any effect over the ground, great friction beingoccasioned thereby. It isA further clear that such a tool,

owing to the greater thickness of shaving or layer, need not divide theground to be excavated, into so man small particles as the ordinarybucket lad er dredger, and that consequently the work of separation isconsiderably -smaller than in the case of the latter. It is furtherclear that the new dredger has the advantage over the bucket ladderdredgers in so far as in working it is situated at the bottom of thecutting, and

not on the top edge of the wall of earth.

It is finally clear that the excavator provided with the s ade-likedigging tool will work in a more fgvorable manner than with the diggingtools hitherto used, as it can work in a continuous manner, andtherefore, need not for the purpose of transporting the dredged materialmake an oscillation during which no excavating Work can be done, an asit can cut or excavate a much thicker layer because the excavatedmaterial at once moves on to the surface of the s ade, no inner'friction is produced in the redged material as soon as the s ade is alittle filled as i the case with the iggin-g tools hitherto use The newexcavator works in a very advantageous manner, since the rails on whichit is traveling need not be shifted as frequently as in the case ofexcavators of other types.

What I claim is:

1. In an excavating machine, the combination, with a lower supportingtruck, and an upper truck movable crosswlse of the said lower truck andprovided with a frame; of an endless conveyer pivotally connected withthe said frame, a 3ib-frame also pivotally connected with the said frameand movable in the same plane as the said conveyer and provided with anexcavating-tool at its free end, and driving devices for operating thesaid' conveyer and excavating-tool.

2. Inan excavating machine, the combination, with a supporting-frame, ofan endless conveyer pivotally connected with the said frame, a jib-framealso pivotally connected withvthe said frame and movable in the sameplane as the said conveyer and provided with. an excavating-tool at itsfree end, an adjustable connection between the free end portions of thesaid conveyer and jib-frame, and driving devices for operating the saidconveyer and excavating-tool. A

3. In an excavating-machine, the combination, with a supporting-frame,and an end` less conveyer pivotally connected with the said frame; of ajib-frame also pivotally connected with the said frame, an adjustableconnection between the outer end portions of the said conveyer andjib-frame, a wheel provided at its periphery with a series of eX-cavating buckets and journaled at the outer end portion of the saidib-frame and adapted to discharge material onto the said conveyer, meansfor raising and lowering the outer end portions of the said conveyer andjibframe together with the said Wheel, and

driving-devices for revolving the said wheel and operating the saidconveyer.

l. In an excavating-machine, the combination` with a supporting-frame, adrivingshaft journaled therein, and an endless conveyer pivotedconcentric with the said driving-shaft; of a jib-frame also pivotedconcentric with. the said driving-shaft, an excavating-Wheel journaledat the outer end portion of the said jib-frame and adapted to dischargematerial onto the said conveyer, means for raising and lowering theouter end portions of the said conveyer and jib-frame together with thesaid Wheel, and drivingp devices for revolving the said wheel from thesaid shaft independent of the said conveyer.

In testimony whereof I aix my signature, in presence of two witnesses.

ROBERT GLOGNER.

IVitnesses:

HENRY HASPER, WOLDEMAR HAUPT.

